Table 4.

Potential main risk factors of malaria

Potential main risk factors	Frequency	Percent (%)
Mosquitoes in high-density	71	25.1
Imported cases	62	21.9
Climate change	36	12.8
Poor environmental conditions	30	10.6
Internal migrant population	25	8.8
Lack of health awareness	25	8.8
Others	34	12.0

Risks were explored by open-ended questions. Keywords of risks were listed in the table. The frequency did not equal to total 557 as some participants either did not answer the questions or answered unclear/unsure about the potential main risk factors